九年级英语上册Unit5LookintoScienceLesson29DNA_TheStoryofYou教案新版冀教版

Unit 5Look into Science
Lesson 29 DNA-The Story of You
1. Analysis of the Students
The students of Grade 9 have mastered certain vocabularies，expressions and structures. They also have the abilities of self-teaching and working in groups. Most of them are willing to express their opinions in English.
2. Analysis of Teaching Content
Lesson 28 is the fifth lesson in Unit 5, Book 5.This unit focus on the subjectLook into science, also teach the students something about science. Students cares about the subject because it is close to everyone. Lesson 28 mainly talks about DNA, it tell us the character and function of DNA, also understand our body. We are unique in the world.
【知识目标】
1.To master the words: blueprint, general, complex, twins, pattern, identify, be related to, except for.
2. To master the phrases: not only…but also, except for, be related to, billions of.
【能力目标】
Improve the students’ ability of speaking, listening, reading and writing. Understand the articles about DNA.
【情感目标】
Know more about the nature, know more about our body. You are unique in the world.
【教学重点】
To master the compound sentences.
【教学难点】
To master the use of DNA.
Tape recorder, Multimedia
Step 1. Warm-up
Free talk: (show the picture of DNA, tell students DNA is short for deoxyribonucleic acid.) Think about it!
1. What do you know about DNA?
2. What can scientists do with DNA?
Step 2. Presentation
1.Free talk:
(1)Where is it in our body? (Show some pictures of DNA.)
(2)What's the function of DNA? (Show some pictures of twins.)
2. Explain the new words.
3. Read the lesson and answer the questions：
(1) What is a blueprint?
(2) Which is more complex, building a living thing or building a house?
(3) Do some twins have the same DNA?。